// default package
package com.ccp.web.database.dao.impl;

import static org.hibernate.criterion.Example.create;

import java.util.List;

import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.transaction.annotation.Transactional;

import com.ccp.web.database.dao.IUserDao;
import com.ccp.web.database.entity.User;

/**
 * A data access object (DAO) providing persistence and search support for User
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see .User
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class UserDaoImpl implements IUserDao {
	private static final Logger log = LoggerFactory
			.getLogger(UserDaoImpl.class);
	public static final String ACCOUNT = "account";
	public static final String PASSWORD = "password";
	public static final String USERNAME = "username";
	public static final String AGE = "age";

	private SessionFactory sessionFactory;

	private Session session;

	public SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	public void init() {
		session = sessionFactory.getCurrentSession();
	}

	public void save(User transientInstance) {
		log.debug("saving User instance");
		try {
			init();
			session.save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(User persistentInstance) {
		log.debug("deleting User instance");
		try {
			init();
			session.delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public User findById(java.lang.Short id) {
		log.debug("getting User instance with id: " + id);
		try {
			init();
			User instance = (User) session.get("User", id);

			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List<User> findByExample(User instance) {
		log.debug("finding User instance by example");
		try {
			init();
			List<User> results = (List<User>) session.createCriteria("User")
					.add(create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding User instance with property: " + propertyName
				+ ", value: " + value);
		try {
			init();
			String queryString = "from User as model where model."
					+ propertyName + "= ?";
			Query queryObject = session.createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List<User> findByAccount(Object account) {
		return findByProperty(ACCOUNT, account);
	}

	public List<User> findByPassword(Object password) {
		return findByProperty(PASSWORD, password);
	}

	public List<User> findByUsername(Object username) {
		return findByProperty(USERNAME, username);
	}

	public List<User> findByAge(Object age) {
		return findByProperty(AGE, age);
	}

	public List findAll() {
		log.debug("finding all User instances");
		try {
			init();
			String queryString = "from User";
			Query queryObject = session.createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public User merge(User detachedInstance) {
		log.debug("merging User instance");
		try {
			init();
			User result = (User) session.merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(User instance) {
		log.debug("attaching dirty User instance");
		try {
			init();
			session.saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(User instance) {
		log.debug("attaching clean User instance");
		try {
			init();
			session.lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public boolean verifyAccountAndPassword(String uName, String pWord) {
		log.debug("attaching Login validation");
		try {
			init();
			String queryString = "from com.ccp.web.database.entity.User as model where model.account= ? and model.password= ?";
			Query queryObject = session.createQuery(queryString);
			queryObject.setParameter(0, uName);
			queryObject.setParameter(1, pWord);
			List result = queryObject.list();
			if (result.size() == 1) {
				return true;
			} else {
				return false;
			}
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}